Mike, Hornady's 6th edition shows for 7.62x51mm NATO.........
...........using a 155gr bullet and IMR4895 a starting load of 37.6gr(2200fps) and a max load of 43.4gr(2700fps). They listed an M1A as the rifle the loads were tested in. No mention as to whether or not they were reliably cycling the action for the entire load charge spectrum. Maybe someone with actual cetme experience can expound on whether or not the lighter end of this spectrum is reliably cycling the action, as I do not reload for this caliber. Cases used for data were Hornady/Frontier and primers were Winchester WLR. Barrel length was 22". Use this data at your own risk.
My 1965 ISHAPORE chambered for the T-65 (aka 7.62x51) works well with a recipe from Alliant. They call for a 150 grain Spritzer on top of 25 gr. of 2400. My first rounds out of the rifle were groups of 15 each at 10%, 5% reduced loads and the full 25 grains, made with Sierra 2115 FMJs in '63 Lake City with CCI 200 primers. Barrel length is 25". The cited pressure was 36,000 psi. These 25 gr loads were good to point of aim at 100 yards, enough for me at the time. The load is not punishing like the MilSurp in a Nagaint M38, really more fun than work.
American Rifleman match load data which includes an m80 Ball equivalent with 150 grain bullets and IMR 4895. A little slower than M80 Ball, but these loads work well a nephew's and a buddy's Cetmes as well as my M1a/M14 clones and 308 Garands.